Index: sys/dev/nvme/nvme_private.h =================================================================== --- sys/dev/nvme/nvme_private.h +++ sys/dev/nvme/nvme_private.h @@ -196,6 +196,7 @@ int64_t num_intr_handler_calls; int64_t num_retries; int64_t num_failures; + int64_t num_ignored; struct nvme_command *cmd; struct nvme_completion *cpl; Index: sys/dev/nvme/nvme_qpair.c =================================================================== --- sys/dev/nvme/nvme_qpair.c +++ sys/dev/nvme/nvme_qpair.c @@ -544,8 +544,10 @@ * as soon as initialization is complete and we start sending commands * to the device. */ - if (qpair->recovery_state != RECOVERY_NONE) + if (qpair->recovery_state != RECOVERY_NONE) { + qpair->num_ignored++; return (false); + } /* * Sanity check initialization. After we reset the hardware, the phase @@ -750,6 +752,7 @@ qpair->num_intr_handler_calls = 0; qpair->num_retries = 0; qpair->num_failures = 0; + qpair->num_ignored = 0; qpair->cmd = (struct nvme_command *)queuemem; qpair->cpl = (struct nvme_completion *)(queuemem + cmdsz); prpmem = (uint8_t *)(queuemem + cmdsz + cplsz); Index: sys/dev/nvme/nvme_sysctl.c =================================================================== --- sys/dev/nvme/nvme_sysctl.c +++ sys/dev/nvme/nvme_sysctl.c @@ -159,6 +159,7 @@ qpair->num_intr_handler_calls = 0; qpair->num_retries = 0; qpair->num_failures = 0; + qpair->num_ignored = 0; } static int @@ -221,6 +222,21 @@ return (sysctl_handle_64(oidp, &num_failures, 0, req)); } +static int +nvme_sysctl_num_ignored(SYSCTL_HANDLER_ARGS) +{ + struct nvme_controller *ctrlr = arg1; + int64_t num_ignored = 0; + int i; + + num_ignored = ctrlr->adminq.num_ignored; + + for (i = 0; i < ctrlr->num_io_queues; i++) + num_ignored += ctrlr->ioq[i].num_ignored; + + return (sysctl_handle_64(oidp, &num_ignored, 0, req)); +} + static int nvme_sysctl_reset_stats(SYSCTL_HANDLER_ARGS) { @@ -276,6 +292,9 @@ SYSCTL_ADD_QUAD(ctrlr_ctx, que_list, OID_AUTO, "num_failures", CTLFLAG_RD, &qpair->num_failures, "Number of commands ending in failure after all retries"); + SYSCTL_ADD_QUAD(ctrlr_ctx, que_list, OID_AUTO, "num_ignored", + CTLFLAG_RD, &qpair->num_ignored, + "Number of interrupts posted, but were administratively ignored"); SYSCTL_ADD_UINT(ctrlr_ctx, que_list, OID_AUTO, "recovery", CTLFLAG_RW, &qpair->recovery_state, 0, @@ -343,6 +362,11 @@ ctrlr, 0, nvme_sysctl_num_failures, "IU", "Number of commands ending in failure after all retries"); + SYSCTL_ADD_PROC(ctrlr_ctx, ctrlr_list, OID_AUTO, + "num_ignored", CTLTYPE_S64 | CTLFLAG_RD | CTLFLAG_MPSAFE, + ctrlr, 0, nvme_sysctl_num_ignored, "IU", + "Number of interrupts ignored administratively"); + SYSCTL_ADD_PROC(ctrlr_ctx, ctrlr_list, OID_AUTO, "reset_stats", CTLTYPE_UINT | CTLFLAG_RW | CTLFLAG_MPSAFE, ctrlr, 0, nvme_sysctl_reset_stats, "IU", "Reset statistics to zero");